US7646348B2 - Grounded self-complementary antenna for electronic device - Google Patents

Grounded self-complementary antenna for electronic device Download PDF

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Publication number
US7646348B2
US7646348B2 US11/802,096 US80209607A US7646348B2 US 7646348 B2 US7646348 B2 US 7646348B2 US 80209607 A US80209607 A US 80209607A US 7646348 B2 US7646348 B2 US 7646348B2
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Prior art keywords
metal
complementary
electronic device
self
antenna
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US11/802,096
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US20080088522A1 (en
Inventor
Jiunn-Ming Huang
Chia-Tien Li
Shen-Pin Wei
Kuan-Hsueh Tseng
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Wistron Neweb Corp
Winstron NeWeb Corp
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Winstron NeWeb Corp
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Assigned to WISTRON NEWEB CORPORATION reassignment WISTRON NEWEB CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, JIUNN-MING, LI, CHIA-TIEN, TSENG, KUAN-HSUEH, WEI, SHEN-PIN
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises

Definitions

  • the present invention relates to an electronic device with a built-in antenna, and more particularly to an electronic device built in with a self-complementary antenna (SCA).
  • SCA self-complementary antenna
  • An antenna is built in some notebook computers to allow the notebook computers to have the radio electromagnetic signal receiving function.
  • notebook computer antennas such as the ones disclosed in U.S. Pat. No. 6,995,718, U.S. Pat. No. 6,853,336, U.S. Pat. No. 6,833,818, U.S. Pat. No. 6,809,690, U.S. Pat. No. 6,724,348, U.S. Pat. No. 6,628,236, U.S. Pat. No. 5,828,341 and Taiwan Utility Model Patent No. M279,992 and M281,308.
  • the antennas disclosed in the patents mentioned above almost are single-element-typed antennas, the electromagnetic signal transmission efficiency is rather low and the electromagnetic signal transmission bandwidth is rather narrow.
  • Taiwan Patent No. 595,041 discloses a similar self-complementary antenna.
  • the antenna comprises a coaxial transmission line with a central wire and an outer layer grounding conductor, a first metal radiating sheet and a second metal radiating sheet, in which the shapes of the first and the second metal radiating sheets generally are complementary to each other.
  • the both radiating sheets are formed on a medium base plate by means of printing or etching and disposed symmetrically on two sides of the medium base plate relative to a central line of the medium base plate to form two arms of the antenna.
  • each of the both metal radiating sheet comprises a feeding point connected to a center wire or an outer layer grounding conductor of the coaxial transmission line.
  • the antenna mentioned above has a rather wide bandwidth.
  • the present invention is proposed.
  • the main object of the present invention is to provide a grounded self-complementary antenna for an electronic device, capable of elevating the electromagnetic signal transmission efficiency of the electronic device.
  • Another object of the present invention is to provide a grounded self-complementary antenna for an electronic device, capable of broadening the electromagnetic signal bandwidth for an electronic device.
  • a grounded self-complementary antenna for an electronic device comprises a metal radiator used for responding to electromagnetic waves in a certain wavelength range and a metal complementary element adjacent to the metal radiator, an open zone is disposed at an inner portion thereof wherein shapes of the open zone and the metal radiator are symmetry to allow the metal radiator and the metal complementary element to form a self-complementary antenna.
  • One end of the metal radiator adjacent to the metal complementary element has a feeding point for transmitting electromagnetic signals.
  • the metal complementary element and the a metal grounding element of the electronic device are electrically connected to each other so as to substantially enlarge an area of a ground end of the self-complementary antenna to enable the self-complementary antenna to obtain the good radiation efficiency and broaden the bandwidth so as to elevate the radio signal transmission effect of the electronic device.
  • FIG. 1 is schematic view, showing a grounded self-complementary antenna for an electronic device of a first embodiment of the present invention
  • FIG. 2A is a radiation efficiency test graph when a metal complementary element of a first embodiment of the present invention is not electrically connected to an electronic device;
  • FIG. 2B is a radiation efficiency test graph when a metal complementary element of a first embodiment of the present invention is electrically connected to an electronic device;
  • FIG. 3A is a voltage standing wave ratio test graph when a metal complementary element of a first embodiment of the present invention is not electrically connected to an electronic device;
  • FIG. 3B is a voltage standing wave ratio test graph when a metal complementary element of a first embodiment of the present invention is electrically connected to an electronic device;
  • FIG. 4 is schematic view, showing a grounded self-complementary antenna for an electronic device of a second embodiment of the present invention
  • FIG. 5 is schematic view, showing a grounded self-complementary antenna for an electronic device of a third embodiment of the present invention.
  • FIG. 6 is schematic view, showing a grounded self-complementary antenna for an electronic device of a fourth embodiment of the present invention.
  • FIG. 7 is schematic view, showing a grounded self-complementary antenna for an electronic device of a fifth embodiment of the present invention.
  • a grounded self-complementary antenna for an electronic device according to the present invention is used for elevating the radio signal transmission effect of the electronic device.
  • a self-complementary antenna 10 of a first embodiment according to the present invention comprises a metal radiator 11 and a metal complementary element 12 adjacent thereto.
  • the metal radiator 11 and the metal complementary element 12 can be formed on one face of an insulation plate 100 by means of circuit printing.
  • the metal radiator 11 has a specific shape to respond to electromagnetic waves in a certain wavelength range.
  • An open zone 121 is disposed inside the metal complementary element 12 .
  • the shapes of the open zone 121 and the metal radiator 11 are symmetrical to each other to allow the metal radiator 11 and the metal complementary element 12 to form the self-complementary antenna 10 .
  • One end of metal radiator 11 adjacent to the complementary element 12 has a feeding point 13 for outputting/inputting electromagnetic signals.
  • the present invention is characterized in that the metal complementary element 12 of the self-complementary antenna 10 is caused to get in touched with or electrically connect with a metal grounding element 21 of the electronic device so as to substantially enlarge the area of a grounding end of the self-complementary antenna 10 to enable the self-complementary antenna 10 to obtain the good radiation efficiency and elevate the bandwidth.
  • the metal grounding element 21 of the electronic device can be a metal housing, metal frame or electromagnetic wave prevention metal sheet of the electronic device.
  • the metal complementary element 12 and the metal grounding element 21 of the electronic device can contact with each other directly or be electrically connected to each other through a conduction sheet 22 .
  • the electronic device can be cellular phone, a personal digital assistant with radio communication function, palm computer, notebook computer or desktop computer.
  • FIGS. 1 , 2 A, 2 B, 3 A and 3 B Please refer to FIGS. 1 , 2 A, 2 B, 3 A and 3 B.
  • the radiation efficiency of the self-complementary antenna 10 is 0.58 as FIG. 2A shows and when a voltage standing wave ratio is 2.
  • a response frequency is between 1.393 MHz (10 6 Hz) and 1.8475 MHz, the bandwidth thereof is 0.45 MHz as FIG. 3A shows.
  • the radiation efficiency of the self-complementary antenna 10 is 0.63 as FIG. 2B shows and when a voltage standing wave ratio is 2.
  • a response frequency is between 1.5325 MHz and 2.212 MHz, the bandwidth thereof is 0.68 MHz as FIG. 3B shows.
  • FIG. 4 shows a grounded self-complementary antenna for an electronic device of a second embodiment according to the present invention.
  • a metal radiator 31 of a self-complementary antenna 30 does not contact with a metal grounding element 41 through a first insulation material layer 32 and a metal complementary element 33 of the self-complementary antenna 30 contacts with the metal grounding element 41 , but the edges of a open zone 331 of the metal complementary element 33 does not contact with the metal grounding element 41 through a second insulation material layer 34 .
  • the first and the second insulation material layers 32 and 34 can also be integrated together and are a twin adhesive; two faces of the twin adhesive can respectively be stuck onto the self-complementary antenna 30 and the metal grounding element 41 .
  • the metal complementary element 33 and the metal grounding element 41 can further be electrically connected with each other through a conducting pad 42 .
  • the self-complementary antenna 30 of the present embodiment is convenient to be combined with the metal grounding element 41 of the electronic device to allow the electronic device to be combined with the different shaped self-complementary antenna 30 depending on the need.
  • FIG. 5 shows a grounded self-complementary antenna for an electronic device of a third embodiment according to the present invention.
  • a metal radiator 51 of a self-complementary antenna 50 is formed on one face of an insulation plate 52 that is combined with a metal grounding element 61 of an electronic device at one side thereof.
  • the metal grounding element 61 has an open zone 611 symmetrical to the metal radiator 51 .
  • the metal radiator 51 and the open zone 611 of the metal grounding element 61 are utilized to form the self-complementary antenna 50 .
  • a metal complementary element of the self-complementary antenna 50 of the present embodiment is the metal grounding element 61 of the electronic device.
  • FIG. 6 shows a grounded self-complementary antenna for an electronic device of a fourth embodiment according to the present invention.
  • a metal complementary element 711 of a self-complementary antenna 71 and a metal grounding housing 722 of a liquid crystal display 721 of a notebook computer 72 are combined with and electrically connected to each other.
  • FIG. 7 shows a grounded self-complementary antenna for an electronic device of a fifth embodiment according to the present invention.
  • a bottom of a metal grounding element 811 of a self-complementary antenna 81 is combined with and is electrically connected to a metal grounding housing 821 of an electronic device 82 such as a cellular phone, a personal digital assistant with radio communication function or a palm computer.
  • a metal complementary element of a self-complementary antenna and a metal grounding element of an electronic device are caused to contact with or be electrically connected to each other or are a same article according to the present invention so as to substantially enlarge the area of a grounding end of the self-complementary antenna to enable the self-complementary antenna to have the better radiation efficiency and the broader bandwidth such that the radio signal transmission effect of the electronic device is elevated.

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US11/802,096 2006-06-05 2007-05-18 Grounded self-complementary antenna for electronic device Active 2028-04-23 US7646348B2 (en)

Applications Claiming Priority (3)

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TW095119922 2006-05-06
TW95119922A 2006-06-05
TW095119922A TW200746543A (en) 2006-06-05 2006-06-05 Grounded self-complementary antenna of electrical device

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US20080088522A1 US20080088522A1 (en) 2008-04-17
US7646348B2 true US7646348B2 (en) 2010-01-12

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US (1) US7646348B2 (enrdf_load_stackoverflow)
TW (1) TW200746543A (enrdf_load_stackoverflow)

Cited By (1)

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US9450300B2 (en) 2012-11-15 2016-09-20 3M Innovative Properties Company Spiral antenna for distributed wireless communications systems

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TW200925867A (en) * 2007-12-05 2009-06-16 Wistron Corp GPS module and computer system using the same
USD585054S1 (en) * 2008-08-06 2009-01-20 Cheng Uei Precision Industry Co., Ltd. Multi-band antenna
USD611039S1 (en) * 2008-08-21 2010-03-02 Panasonic Corporation Antenna
USD611038S1 (en) * 2008-08-21 2010-03-02 Panasonic Corporation Antenna
USD608770S1 (en) * 2008-08-21 2010-01-26 Panasonic Corporation Antenna
USD602479S1 (en) * 2008-11-14 2009-10-20 Murata Manufacturing Co., Ltd. Antenna for wireless tag
USD602480S1 (en) * 2008-11-14 2009-10-20 Murata Manufacturing Co., Ltd. Antenna for wireless tag
USD682813S1 (en) * 2012-12-07 2013-05-21 Cheng Uei Precision Industry Co., Ltd. Multi-band antenna
USD684954S1 (en) * 2012-12-07 2013-06-25 Cheng Uei Precision Industry Co., Ltd. Multi-band antenna
USD685352S1 (en) * 2013-02-15 2013-07-02 Airgain, Inc. Antenna
USD713393S1 (en) * 2013-03-09 2014-09-16 Avery Dennison Corporation Antenna
USD704171S1 (en) * 2013-03-09 2014-05-06 Avery Dennison Corporation RFID antenna
USD716773S1 (en) * 2013-09-10 2014-11-04 Avery Dennison Corporation RFID inlay
USD710835S1 (en) * 2014-01-17 2014-08-12 Avery Dennison Corporation Antenna
USD715782S1 (en) * 2014-04-04 2014-10-21 Avery Dennison Corporation RFID inlay
USD715781S1 (en) * 2014-04-04 2014-10-21 Avery Dennison Corporation RFID inlay
USD716775S1 (en) * 2014-05-15 2014-11-04 Airgain, Inc. Antenna
USD776093S1 (en) * 2015-04-08 2017-01-10 Avery Dennison Retail Information Services, Llc Antenna
USD795227S1 (en) * 2015-06-09 2017-08-22 Airgain Incorporated Antenna
USD880460S1 (en) * 2015-06-12 2020-04-07 Avery Dennison Retail Information Services, Llc Antenna
USD798277S1 (en) * 2015-08-12 2017-09-26 Airgain Incorporated Antenna
WO2018226916A1 (en) * 2017-06-07 2018-12-13 Fractal Antenna Systems, Inc. Corrosion mitigation for etched and/or printed circuits
CN113809533B (zh) * 2021-09-28 2022-10-28 广州芯德通信科技股份有限公司 用于wifi6 onu的非全向微带天线及wifi6 onu设备

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9450300B2 (en) 2012-11-15 2016-09-20 3M Innovative Properties Company Spiral antenna for distributed wireless communications systems

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US20080088522A1 (en) 2008-04-17
TWI337424B (enrdf_load_stackoverflow) 2011-02-11
TW200746543A (en) 2007-12-16

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